Mold for building concrete or cement walls.



N0. 710,749. Patented 00L 7, |902. W. H. CADWELL.

MOLD FUR BUILDING GONCRETE 0R CEMENT WALLS.

(Application lod June 11. 1902.)

(No Model.)

IN VENTUR.

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WILLIAM H. CADW'ELL, CF WILLIAIMISTON, MICHIGAN.

MOLD FOR BUlLDlNG CONCRETE OR CEMENT WALLS.

SPESIFICATION forming part of Letters Patent No. 710,749, dated October 7, 1902.

Application filed Tune 11,1902. Serial No. 111.084. (No model.)

T0 all wtmn it may concerm' Be it known that LWinmnM H. CADWELL, a citizen of the United States of America, residing at Williamston, in the county of Ingham and State of Michigan, have invented certain new and useful Improvements in Moldsfor Building Concrete or Cement Walls, of which the following is a specication, reference being had therein to the accompanying drawings.

This invention refers more particularly to the art of building walls of cement; and it consists in a collapsible mold whereby cement walls of any thickness may be built with the same appliances and whereby the outer face of the wall may be veneered at the same time with a coat of tine cement, while the interior of the wall may be built up with cement mixed with crushed stone, all as more fully set forth hereinafter and shown in the accompanying drawings, in which- Figure l is a perspective View showing a cement structure in the process o'f erection with the use of my wall-mold. Fig. 2 is a cross section of Fig. l. Fig. 3 is a detached perspective view of one of the false mold-plates, and Fig. 4 is a horizontal section on the line c of Fig. 2.

My wall-mold consists of moldboards A, formed of loose boards or planks, and of binders B, each composed of'two side bars a and of two adjustable tie-rods b c, transversely uniting the side bars in parallelism with each other. These tie-rods Z: and c pass loosely through the wooden side bars, and the former is screw-threaded at both ends and clamps the side bars by means of screw-nuts CZ bearing against the inner and outer faces of the side bars, washers e being interposed between the nuts and their bearing-faces., The tierod c is made adjustable upon one end only by a nut and washerf, the other end having a fixed head g. The object ofthis construction is to permit of spacing the side bars of the binders B any distance apart within the limits of thickness usually given to cement walls and also to clamp the moldhoards A tightly to the wall.

The use of my appliance is very simple and will be readily understood from the illustration in Fig. l, which shows the corner of a building with cement walls in the course of construction. The mold as shown therein is formed of two planks (or rows of planks) placed against the outside face and two like planks (or rows of planks) placed against the inner face. and held together by means of binder-frames placed at intervals apart, all so arranged that the upper planks overtop the part already built and form a trough for {illing in fresh cement between the two upper planks.

By building the molds for all the walls of the building andproceeding systematically to raise the Walls evenly up the height of one board all around the work of raising` the molds and filling in fresh cement may be carried out during the day-time, so that during'the night-time the freshlyebuilt portions'will have time to set and harden. The progress made in the erection of the building can be hastened. by using wider planks, (or more planks on top of each other,) with the object of forming troughs of greater depth. VViththis modus opera/ndt' of construction door and window frames may be placed in position while the walls are built up, and great facility is afforded for building hollow walls by using short cylinders of sheet metal, as C, which by being placed in the mold before the lling in is done will make hollow flues in the wall, as will be well understood. These cylindersare formed with handles, by means of which they may be readily drawn up as the work progrosses.

In using concrete-thatis, a mixture made of cement with broken or crushed stone-the outer face of the wall would have an unfinished or rough appearance, and to avoid this I use false moldboards D, consisting of thin metal plates, in connection with the upper outside moldboard. These plates are made, preferably, of tin or other sheet metal and are of the same height substantially as the planks forming the moldboards, and at their upper edges they are formed or provided with hooks h, adapted to engage with the upper edges of the top plank, so as to suspend the false moldboard therefrom at a small distance from the inner face of the outer moldboard. These hooks h may be integrally formed from bentover portions of the plates, so as to form two ICO depending lugs 72,' h2, as shown. In practice these plates are hung upon the inside of the outer top plank before the concrete is filled in, and the space thus formed between the two is filled in With cement, while the rest is filled in with concrete. These false moldboards are then drawn out when it is safe to do so. Both faces ofthe Walls, if desired, may be faced with cement in the same manner.

In order to give the Walls the appearance of being divided in blocks, the top planks may be provided upon the inside face With vertical cleats 2' of triangular or square cross-section to form the desired impress. Horizontal cleats L" may also be provided to form the horizontal block-divisions, or other ornamental designs may be used; but it will be observed that in such case the molds cannot be raised up bodily as awhole, but must be taken apart and be rebuilt every time a new layer zo 

